
The XR-1 Sportsman Racing Muffler delivers a durable, performance-tuned exhaust solution built to last.
Borla 40947 Features:
- Universal muffler. Reversible design.
- 4 in. Center Inlet/4 in. Center Outlet 4.25 in. x 7.88 in. Oval x 12 in. Long Body 17 in. Overall Length.
- Compact size is perfect for applications with limited space.
- Un-Notched necks are designed for weld in installation.
Multicore Racing Mufflers
Borla XR-1 Racing Mufflers are the choice of today's hottest drag and oval track racers. With a patented straight-through design and multicore technology, Borla XR-1 Mufflers actually outflowed a straight pipe in repeated testing. They use sound-absorbing stainless steel packing to prevent burnout and meet the strictest noise requirements. Hands down, Borla's XR-1 Series offers the best balance of sound and power.